本文主要进行了粗糙集的数学基础研究，与程度粗糙集和变精度粗糙集两个广义粗糙集模型的探讨。
In this paper, the mathematical foundation study of rough sets and the study of two general rough sets models are mainly researched.
将广义覆盖粗糙集理论及其计算运用到信息检索模型。
This article applies the generalized covering rough set theory to information retrieval model.
应用推荐